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首页> 外国专利> METHODS AND APPARATUS FOR A NAVIGATION SYSTEM WITH REDUCED SUSCEPTIBILITY TO INTERFERENCE AND JAMMING

METHODS AND APPARATUS FOR A NAVIGATION SYSTEM WITH REDUCED SUSCEPTIBILITY TO INTERFERENCE AND JAMMING

机译：具有降低的干扰和干扰敏感性的导航系统的方法和装置

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A navigation system provides a significant level of protection against allforms of interference or jamming to GPS in a cost-effective way. The systememploys a network of ground reference stations and Low Earth Orbiting (LEO)satellites in conjunction with GPS. A common-view ranging geometry to a GPSsatellite is established that links a reference station and a user. A secondcommon-view geometry to a LEO satellite between the same reference station anduser pair is also established. The ground stations synthesize real-time aidingsignals by making carrier phase measurements of GPS the LEO satellite signals.This aiding information is transmitted via the LEO satellites to the userreceiver at high power to penetrate ambient jamming. The user receiver locksonto the carrier phase of the LEO satellite, demodulates the aidinginformation, then applies the carrier phase measurements and the aidinginformation to enable extended coherent measurements of the GPS signals. Thesystem thereby recovers the GPS signals that would otherwise be lost to thejamming.
机译：导航系统可为所有人员提供重要的保护以经济有效的方式干扰或干扰GPS。系统使用地面参考站和近地轨道（LEO）网络卫星与GPS结合使用。 GPS的普通视图测距几何建立链接参考站和用户的卫星。一秒同一参考站之间的LEO卫星的共视几何用户对也已建立。地面站综合实时协助通过将GPS的载波相位测量值作为LEO卫星信号来接收信号。该辅助信息通过LEO卫星发送给用户接收器以高功率穿透周围的干扰。用户接收器锁进入低轨卫星的载波相位，对辅助信号进行解调信息，然后应用载波相位测量和辅助信息以实现GPS信号的扩展相干测量。的系统从而恢复了GPS信号，否则GPS信号将丢失给干扰

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